4. A souvenir shop in Souq Waqif sells 6 types of souvenirs, with each type having 15 pieces. The shopkeeper decides to give away 4 items of each type as a promotion, then buys an additional 25 pieces for the store. Later, he sells 12 pieces. How many pieces are left in the shop?
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.